Declaring a StarkNet contract on DevNet with Account(), but I get GatewayError in StarkNetJS

Hey! With starknetjs(4.15.1) I am trying to declare a contract on devnet(0.4.2) using one of predeployed accounts:

const account = new Account(
  provider,    '0x33507ff2edf12c12c73d0b6d1d90de9fac12a355de1097ab305249612451919',
  ec.getKeyPair('0x1de9ea6670d3da1fc735df5ef7697fb9')
);
...
const response = await account.declare({contract, classHash})

In return I get:

     GatewayError: Error at pc=0:124:
Signature (190318159909676960154007463740407923762489366165178197276822367516441018681, 1481560316189074241501727945883196969140908548840364106059171525936237675551), is invalid, with respect to the public key 1739835831186746845112715264902076958080619051586179661985458614041125785393, and the message hash 1015445806423683747697120201561835375586563571781789449937604429244570518935.
Cairo traceback (most recent call last):
Unknown location (pc=0:615)
Unknown location (pc=0:600)
Unknown location (pc=0:245)